http://www.startribune.com/484/story/1158194.htmlWALTHAM, Mass. — Most of us would agree that a mother’s job is priceless.But the folks at Salary.com take time every year to figure out how much the actual work is worth.This year, they say the work of a stay-at-home mom would command an annual salary of more than $138,000. That’s up about three percent from last year.For working mothers, the amount is put at more than $85,000 this year. That is on top of any money earned in the workplace.